In some cases I would say that maybe this is normal, but you just canít go on that because most of the time is can be a cause of something different. I have seen this before and had first hand knowledge of this going on in our family with one of the children, as of matter of fact two of them. One of them started gaining more control around the age of five, however one of them had the problem well into her seventh year, but soon gained the control.
I have to agree you should talk to your family doctor about this issue, but most likely they are going to tell you that it will clear up soon, most kids just donít have that control and seeing that your child is only 3 almost going to be 4 I really wouldnít start worrying too much at this time, yes you can be concerned, but just let nature take its course.